Wilo Stratos GIGA Betriebsanleitung Seite 81

Δp
Fig. 16: Pump cycling
Behaviour of the inputs and outputs
Fault and run signals
Installation and operating instructions Wilo-Stratos GIGA, GIGA-D, GIGA B
Manual or external pump cycling is possible 5 seconds after the last
pump cycling, at the earliest.
Activation of external pump cycling simultaneously deactivates
internal time-controlled pump cycling.
Pump cycling can be described schematically as follows
(see also Fig. 16):
• Pump 1 turns (black line)
• Pump 2 is switched on at minimum speed and soon afterwards
reaches the setpoint (grey line)
• Pump 1 is switched off
t
• Pump 2 continues to run until the next pump cycling
NOTICE:
In constant speed mode, a slight increase in flow can be expected.
Pump cycling is dependent on the ramp time and generally lasts 2 s. In
auto control, there may be minor fluctuations in the delivery head.
However, pump 1 adjusts itself to the changed conditions. Pump
cycling is dependent on the ramp time and generally lasts 4 s.
Actual value input In1 setpoint input In2:
• At the master: acts on the whole unit.
"Extern off":
• Set at the master (menu <5.1.7.0>): depending on the setting in
menu <5.1.7.0>, acts only on the master or on the master and the
slave.
• Set at the slave: acts only on the slave.
ESM/SSM:
• A collective fault signal (SSM) can be connected to the master for a
central control centre.
• In this case, the contact may only be made to the master.
• The display is for the whole unit.
• This signal can be programmed on the master (or using the
IR-Monitor/IR-Stick) as an individual fault signal (ESM) or a collective
fault signal (SSM) in menu <5.1.5.0>.
• The contact must be made to each pump for individual fault signals.
EBM/SBM:
• A collective run signal (SBM) can be connected to the master for a
central control centre.
• In this case, the contact may only be made to the master.
• The display is for the whole unit.
• This signal can be programmed on the master (or using the IR-Moni-
tor/IR-Stick) as an individual run signal (EBM) or collective run signal
(SBM) (menu <5.1.6.0>).
• The functions - "Readiness", "Operation", "Mains on" - from EBM/
SBM can be set at <5.7.6.0> on the master.
NOTICE:
"Readiness" means:
"Operation" means:
"Mains on" means:
• The contact must be made to each pump for individual run signals.
(11-22kW)
The pump could run, there is no fault.
Motor turning.
Mains voltage is present.
English
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